# CO₂ AR vs ARC Geography

The clearest difference is update cadence: CO₂ AR at daily against ARC Geography's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

CO₂ AR ships an update daily, ARC Geography every 2 months. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | CO₂ AR | ARC Geography |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Daily** | Every 2 months |
| Size | 95 MB | 421 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ekkehard Petzold](https://appshunter.io/developer/1156102927) | [CleverBooks Limited](https://appshunter.io/developer/1308199195) |

## What reviewers say

### CO₂ AR

[App page](https://appshunter.io/ios/app/co-ar/id1296287523)

**Features:** macOS Compatibility

**In-app purchases:** none


### ARC Geography

[App page](https://appshunter.io/ios/app/arc-geography/id1564453220)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CO₂ AR free?

CO₂ AR is free to download, with no in-app purchases.

### Is ARC Geography free?

ARC Geography is free to download, with no in-app purchases.

### Do CO₂ AR or ARC Geography have ads?

Neither CO₂ AR nor ARC Geography shows ads.

### Which is updated more often, CO₂ AR or ARC Geography?

CO₂ AR ships an update daily, and ARC Geography every 2 months. Most recently, CO₂ AR was updated on October 15, 2026 and ARC Geography on October 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*